Texas Instruments TLC274CD

Overview

TLC274CD from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 10 mV input offset voltage (max), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to GND - enabling accurate signal conditioning in low-voltage sensor interfaces and industrial analog front-ends.

For engineers reviewing the TLC274CD datasheet, TLC274CD pinout, TLC274CD application, or TLC274CD equivalent, key selection criteria include its 3–16 V supply range, >10¹² Ω input impedance, 0.5 V/μs slew rate, and SOIC-14 package compatibility with legacy BiFET upgrade paths in data acquisition and instrumentation designs.

Technical Context

The TLC274CD uses a polysilicon-gate CMOS process to achieve ultra-low input bias current (<60 pA typ) and stable offset voltage drift (0.3 μV/°C), making it suitable for high-impedance transducer amplification where leakage-induced errors must be minimized. Its input common-mode range extends below GND (–0.1 V min), supporting true single-supply configurations without level-shifting circuitry.

Designed as a cost-effective alternative to BiFET op-amps, the TLC274CD delivers boosted slew rate and unity-gain bandwidth (4.5 MHz) while maintaining precision DC performance - enabling use in active filters, precision comparators with hysteresis, and multi-channel sensor signal chains requiring matched gain and offset behavior across all four amplifiers.

Key Specifications

Pinout & Package

Package: SOIC-14 (D package), 8.65 mm × 6 mm body size, surface-mount, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad precision op-amp applications.

Compared with TLV2464IDR and OPA4188AIDR, the TLC274CD offers the lowest cost and broadest supply range (3–16 V) while delivering adequate precision for industrial sensor interfaces - making it optimal where moderate DC accuracy, low power, and wide voltage tolerance are jointly prioritized.

Availability

TLC274CD is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable medical instrumentation, and automotive cabin sensor interface applications requiring stable component supply and long-term manufacturing continuity.

Supply support for TLC274CD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amp design and manufacturing.

The TLC274CD belongs to TI's TLC27xx precision quad op-amp family, engineered to replace legacy BiFET amplifiers in cost-sensitive, single-supply industrial and instrumentation systems while maintaining high input impedance and low noise.

FAQ

What is the maximum operating temperature range for the TLC274CD?

The TLC274CD is rated for 0°C to 70°C ambient operation per its C-suffix designation. It supports supply voltages from 3 V to 16 V within this range, with guaranteed specifications including 10 mV max input offset voltage and 60 pA max input bias current at 70°C. Operation outside this range requires validation using the TLC274I variant.

Does the TLC274CD support true rail-to-rail input operation?

The TLC274CD does not support rail-to-rail input - its common-mode input voltage range extends to –0.1 V (below GND) and up to VDD – 1 V at 25°C. This allows operation with inputs at or slightly below ground in single-supply systems, but inputs must remain ≥1 V below VDD to avoid phase reversal or increased offset error.

Can unused amplifiers in the TLC274CD be left unconnected?

No - unused amplifiers in the TLC274CD must be configured as unity-gain followers with inputs tied to a valid common-mode voltage (e.g., VDD/2 via resistor divider) and outputs connected to their respective inverting inputs. Leaving inputs floating or outputs open risks oscillation, increased supply current, or unpredictable output states.

What decoupling is recommended for the TLC274CD VDD pin?

A minimum 0.1 μF ceramic capacitor placed within 2 mm of the TLC274CD VDD pin and connected to a solid GND plane is required. For noisy environments or high-speed applications, add a 10 μF tantalum or aluminum electrolytic capacitor in parallel on the same supply rail upstream of the 0.1 μF cap to suppress low-frequency ripple.

Is the TLC274CD pin-compatible with other SOIC-14 quad op-amps?

The TLC274CD uses standard SOIC-14 pinout per JEDEC MS-012, matching industry-standard quad op-amp layouts (e.g., LM324, TL074). However, functional compatibility requires verification of supply range, input/output voltage ranges, and bias current - as the TLC274CD's CMOS inputs and single-supply optimization differ significantly from bipolar or JFET predecessors.